#!/usr/bin/perl
use File::Fetch;
use File::Copy;
use File::Basename;
use Cwd qw(abs_path getcwd);
use File::Path qw(make_path remove_tree);
use POSIX qw(strftime);
use Config;

#Fetch failed! HTTP response: 500 Internal Server Error [500 Can't verify SSL peers without knowing which Certificate Authorities to trust] at scripts/create-app line 62.
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME} = 0;
###
### avoid: TLSv1.0 backends...
###
$File::Fetch::BLACKLIST = [qw|lwp httptiny httplite|];

$exe = abs_path($0);
$path = abs_path(dirname($exe));
$java = '/usr/bin/java';
$jarfile_name = "create-app-assembly-1.18.jar";
@java_version = ( );
open(JAVAVER, "$java -version 2>&1 |");
foreach ( <JAVAVER> ) {
    if ( m|version "?(\d+)\.(\d+)|i ) {
        @java_version = ($1,$2);
        print "found java version ", join('.',@java_version), "\n";
    }
}
close(JAVAVER);
die "cannot run $java" unless scalar(@java_version) > 0;
die "java version 1.8 or greater is required\n" unless $java_version[0] > 7 || ($java_version[0] == 1 && $java_version[1] >= 8);

### install path
$distro_jarfile = $jarfile = "$path/java/$jarfile_name";
if ( ! -e $jarfile ) {
    ### development path
    $jarfile = "$path/../target/scala-2.12/$jarfile_name";
    if ( ! -e $jarfile ) {
        $jarfile = $distro_jarfile;
        ### pull from download url
        my $jardir = dirname($jarfile);
        make_path($jardir);
        my $ff = File::Fetch->new(uri => "http://casa.nrao.edu/download/devel/xml-casa/java/$jarfile_name");
        my $where = $ff->fetch( to => $jardir );
    }
}
die "configuration error, cannot find jar file ($jarfile_name)" unless -e $jarfile;

$major_ver = '1';
$minor_ver = '0';
$patch_ver = '0';
$build_ver = '0';

make_path("source");
open( VER_IN,  "< casa-source/casatools/src/code/stdcasa/version.cc.in" );
open( VER_OUT, "> source/casa-version.cc" );
while ( $_ = <VER_IN> ) {
    s|\@CASA_VERSION_MAJOR\@|$major_ver|g;
    s|\@CASA_VERSION_MINOR\@|$minor_ver|g;
    s|\@CASA_VERSION_PATCH\@|$patch_ver|g;
    s|\@CASA_VERSION_FEATURE\@|$build_ver|g;
    print VER_OUT $_;
}
close(VER_OUT);
close(VER_IN);
if ( ! -f "casa-source/casatools/casacore/casa/version.cc" ) {
    die "casacore version file (casa-source/casatools/casacore/casa/version.cc) does not exist...";
}
copy("casa-source/casatools/casacore/casa/version.cc","source/casacore-version.cc");
if ( -f "casa-source/casatools/casacore/casa/version.h.in" ) {
    my $casacore_major = "";
    my $casacore_minor = "";
    my $casacore_patch = "";
    open( CFG, "< casa-source/casatools/casacore/CMakeLists.txt" );
    while ( $_ = <CFG> ) {
        m|set\s*\(\s*PROJECT_VERSION_MAJOR\s+(\d+)\s*\)| && ($casacore_major = $1, next);
        m|set\s*\(\s*PROJECT_VERSION_MINOR\s+(\d+)\s*\)| && ($casacore_minor = $1, next);
        m|set\s*\(\s*PROJECT_VERSION_PATCH\s+(\d+)\s*\)| && ($casacore_patch = $1, next);
    }
    close(CFG);
    open( HIN, "<  casa-source/casatools/casacore/casa/version.h.in" );
    my @hin = <HIN>;
    close(HIN);
    open( HOUT, "> casa-source/casatools/casacore/casa/version.h" );
    foreach ( @hin ) {
        s|\@PROJECT_VERSION_MAJOR\@|$casacore_major|g;
        s|\@PROJECT_VERSION_MINOR\@|$casacore_minor|g;
        s|\@PROJECT_VERSION_PATCH\@|$casacore_patch|g;
        print HOUT $_;
    }
    close(HOUT);
}

make_path("include/casacore/casa");
make_path("include/casagrpc/protos");
open(CONFIG_H,"> include/casacore/casa/config.h");
print CONFIG_H casacore_config( );
close(CONFIG_H);


sub casacore_config {
    my $contents = <<'END-OF-STR';
#ifndef CASA_CONFIG_H
#define CASA_CONFIG_H
#define CASA_DEFAULT_ALIGNMENT (32UL)
#endif
END-OF-STR
    return $contents;
}